Disconnect/connect battery ground line - AR54.10-P-0003MCC

MODEL 451.3/4 

Fig 1: Identifying Ground Cable And Battery

Courtesy of MERCEDES-BENZ USA

	Risk of death  when touching components on vehicles with high-voltage on-board electrical system	Do not touch components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers), must not  carry out any work on high-voltage on-board electrical systems.	AS54.00-Z-0001-01A
	Risk of explosion  from explosive gas. Risk of poisoning and caustic burns  from swallowing battery electrolyte. Risk of injury  through burns to skin and eyes from battery acid or when handling damaged lead-acid batteries	No fires, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
	Notes on battery		AH54.10-P-0001-01A
	Note on the high-voltage on-board electrical system		AH54.00-P-0010-01A
	Note on high-voltage battery		AH54.10-P-0006-01MEV
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on AGM battery		AH54.10-P-0002-01MCC
	Remove/install
1	Check condition of battery (G1), if necessary replace battery (G1)	MODEL 451.391/491 If during the further course of work, work is to be conducted on the high-voltage vehicle electric system. On vehicles with CODE 527 (High-Line radio), before the ground line (1) is disconnected, it must be ensured that the radio code is available to allow the radio to be put into operation at a later stage. The high voltage system cannot be enabled if the battery (G1) is defective: Before replacing the battery (G1) on model 451.391/491, no further work may be performed on the high-voltage vehicle electrical system.	AR54.10-P-1129MCC
2.1	Carry out disconnection of high-voltage system	MODEL 451.391/491 If during the further course of work, work is to be conducted on the high-voltage vehicle electric system.	AR54.10-P-1160MEV
2.2	Connect Star Diagnosis and disconnect HV system	MODEL 451.390/490 If during the further course of work, work is to be conducted on the high-voltage vehicle electric system.
		Print out power disable event log and add to the vehicle file. : Activate high-voltage system.	AD00.00-P-2000-04MCC
3	Connect STAR DIAGNOSIS and read out fault memory
	: Delete DTC memory if necessary.		AD00.00-P-2000-04MCC
4	Remove foot support on passenger side	MODEL 451.3##/4##1#	AR68.30-P-1340MCC
		MODEL 451.3##/4##2#	AR68.30-P-1340MCE
5	Disconnect ground line (1) from the negative terminal of the battery (G1)
6	Install in the reverse order
7	Set time in the instrument cluster and on the additional instrument
8	Enter radio code	MODEL 451.3/4 with CODE 527 (High-Line radio)
9	Adapt audio settings	MODEL 451.3/4 with CODE 527 (High-Line radio)
	Notes on audio settings		AH82.60-P-0002-01MCC